Granted Patent
Utility
US 4,354,893 · App. 06/295,734
Combination roofing material unrolling and heat applying apparatus
Inventors:
William E. Kugler, James M. Pacello
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Aug 24, 1981
Inventors
William E. Kugler
James M. Pacello
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.